Array read by antidiagonals of a(n) = a(n-1)*k-((k-1)/(k^n)) where a(0)=1 and k=(sqrt(x^2+1)+x)^2 for integers x>=1.

A188647

Array read by antidiagonals of a(n) = a(n-1)*k-((k-1)/(k^n)) where a(0)=1 and k=(sqrt(x^2+1)+x)^2 for integers x>=1.

Terms

    a(0) =1a(1) =5a(2) =1a(3) =29a(4) =17a(5) =1a(6) =169a(7) =305a(8) =37a(9) =1a(10) =985a(11) =5473a(12) =1405a(13) =65a(14) =1a(15) =5741a(16) =98209a(17) =53353a(18) =4289a(19) =101a(20) =1a(21) =33461a(22) =1762289a(23) =2026009a(24) =283009a(25) =10301a(26) =145a(27) =1a(28) =195025a(29) =31622993

External references